Property 'login' has no initializer and is not definitely assigned in the constructor.ts(2564)

[pja...@gmail.com]

I'm getting this error:

Property 'login' has no initializer and is not definitely assigned in the constructor.ts(2564)

How can I solve this?

Below code of my component

import { Component, OnInit } from '@angular/core';

import {FormBuilder, FormGroup, Validators} from '@angular/forms';

import {Router} from '@angular/router';

import {UserService} from '../shared/service/user.service';

import {LoginRequest} from '../shared/model/login.request';

@Component({

  selector: 'app-login',

  templateUrl: './login.component.html',

  styleUrls: ['./login.component.css']

})

export class LoginComponent implements OnInit {

  public form: FormGroup;

  public login: LoginRequest;

  public error: boolean;

  constructor(private router: Router, private userService: UserService) { }

  ngOnInit(): void {

    this.error = false;

    this.login = new LoginRequest();

    const fb = new FormBuilder();

    this.form = fb.group({

      user: [null, [Validators.required]],

      newPassword: [null, [Validators.required, Validators.minLength(6)]]

    });

  }

  get disableButtonOk(): boolean {

    return this.form.invalid;

  }

  signing(): void {

    this.userService.login(this.login)

      .subscribe(

        () => {

          this.router.navigate(['/reset-password']);

        },

        () => this.error = true // TODO: tratar erro interno de servidor

      );

  }

}